Final answer:
In Voltaire's novel 'Candide', Cunegonde kissed Candide passionately when she was behind the screen with him, signaling the start of their tumultuous relationship.
Step-by-step explanation:
The question concerns a scene from Voltaire's novel Candide, specifically regarding the actions of the character Cunegonde. The correct answer is that she kissed him passionately. The question seems to mix characters from different stories, as Calixta and Alcée are characters from Kate Chopin's short story "The Storm", and are unrelated to Candide. Cunegonde's actions with Candide demonstrate the blossoming of their feelings and lead to the development of their relationship throughout the narrative. This event sets the stage for the series of misfortunes and adventures that Candide will experience.